Variety of technological trajectories in low emission vehicles (LEVs): a patent data analysis
AbstractThis paper focuses on the diversity of engine technologies for Low Emission Vehicles (LEVs) that are developed by car manufacturers in order to substitute for the conventional internal combustion engine vehicle. Our purpose is to analyse the competition between the various technologies for LEVs as well as the innovative strategy of car manufacturers. We first propose to define and to represent these technological trajectories in order to compare their performances and to identify their strength and weaknesses. The technological bottlenecks, the barriers to the adoption of these alternative engine technologies as well as the features of this technological competition are underlined. We then use a patent data analysis to study the patent portfolios of the main car manufacturers in these technologies on the period from 1990 to 2005. The dynamics of patents applied by car manufacturers gives insight on the competition among technologies and on the strategy of firms. This analysis emphasises the progressive diversification of firms patent portfolios over the whole set of engine technologies and the differentiated strategic positioning of car manufacturers according to countries.
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Bibliographic InfoPaper provided by Groupement de Recherches Economiques et Sociales in its series Cahiers du GRES with number 2006-20.
Date of creation: 2006
Date of revision:
Low emission vehicles; environmental innovation; technological competition; patent data;
Find related papers by JEL classification:
- O33 - Economic Development, Technological Change, and Growth - - Technological Change; Research and Development; Intellectual Property Rights - - - Technological Change: Choices and Consequences; Diffusion Processes
- Q55 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Environmental Economics: Technological Innovation
- L62 - Industrial Organization - - Industry Studies: Manufacturing - - - Automobiles; Other Transportation Equipment
This paper has been announced in the following NEP Reports:
- NEP-ALL-2006-09-23 (All new papers)
- NEP-ENE-2006-09-23 (Energy Economics)
- NEP-ENV-2006-09-23 (Environmental Economics)
- NEP-INO-2006-09-23 (Innovation)
- NEP-TID-2006-09-23 (Technology & Industrial Dynamics)
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